MATLAB: Repeat a vector with increment

incrementshift

Given
vector a = (1:N)'; with N consecutive integers
how to generate
matrix b = [a a+1 a+2 ... a+M]; with M columns, each column incremented by one.
For example
N = 3; M = 3;
a = (1:3)';
b = [(1:3)'  (2:4)'  (3:5)'  (4:6)'];

Best Answer

This works:
N = 3; 
M = 3;
a = (1:3)';
b = bsxfun(@plus, a, [0:M-1])
b =
     1     2     3
     2     3     4
     3     4     5
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